Gear assembly for totalizators



Jan. 1, 1952 A. F. JULIUS ETAL GEAR ASSEMBLY FOR TOTALIZATORS 4Sheets-Sheet 1 Filed June 30, 1948 Decca; ed

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mac i es- Patented Jan. 1, 1952 Sydney,

vdri F a cis it $1 l fN W oyth w T43 fineness .t'q Automa o e South les,Austra an 1 .11} race tqtalisatq installati ne of the kind to which thinY ntion is lefetebi e od s chem ng i respect e h qqmpet tor, in t eent for whic one a ebe' g e cted. are-p. 0: gressively' displayed,throughout the particniar transaction run, on a number of odos hardneters or other indicators. Each ,t ansaction corn em in the ue f aticket, Pecu ia to on competitor. om an one of s v a t k t issue The11169; e c ticke toma ically results in a count; of one being recordedingran total add n 11 and, a so n a a di unit peculiar to the p t cnlarcompetitor. In dd tio o th r o her enames, the' sidin unit's contributeto me Qne eti net odds computin nit v. 59 the evcrel com. ti QrLs: The euni are instrumentalin actuat on of the mentioned iepla be cm t rs, Atypiqal'odde compu ing with; a single 0pm: petite: omp ise two movab e em nts r slid s. h h for @Qnven m 9i sii cuw may e cal a forizontal'slidexfanda vertical glider respectively. The norizontalslider moves horizontally away from a zero 'or datum point; in directcorresnondgme with he transaction'total in r spe o it .re at d inelecompetitor, so that t e d stanc on 'th eli er i e me a oin i di etlym neienelt tee et to "tr n action. Jt ali- I119 e tica s der movesverticallyaway iron; tne'daijinn' poi in i ec rresp ndence wit the tranction mnd total in respect of all the 'goinpetito'gg ti e e t. hu heheigh 9 the verti al slidex tr m the dat m P n e d e tly pmn rti al tjthe ra total of "tran ec iq csi The I t o fe iand total to competitortotal ro qrpi f l m m odds Io that comp t tor and the we? is tree? tteto th at d, bar me er by meeh niem with which the present invention isnot concerned.

In each odds computing unit the recession of thehorizontal slider from'the datuzgn point is'con trolled by the related competitor adding unitby way (forexample) of a'sprocket'ch'ain. having one end anchoredto theslider and a portion meshing a sprocket'wheel on the'addingunit.

This sprocket wheel is one for which the total rotation is directlyproportional to (the-count of transactions accumulated in its addingunit'.

gcln (01. 74-4 48) er cal 'as 9 the "cQmnuti12s u its a al I Atom ha a is c wnel l M l: he mountiqi li e s alt rc at n' '11 n lci pxtionel 6cream ote 'Q trans dated vi th g and tota ed ing 1.4. 1. he epnie tesltha wh n the o 11 odd in the a am rc renfie ee 1eteneythee 'nieeee vid nween 9 m 1 i? ir il? are payable the grand total is halved.- The odds ona particular starterare therefore different depending on whether it is athree dividend or a two dividend event. tioned gear assembly isfurnished with a dividend gear change ratio to suitthese two differentconditions.

Because of this the men.-

for severalseparate gearchange manipulations (that is, for capacity anddividend ratio changes) is dispensed with by enabling both of saidchanges to'be accomplished by a single gear change operation, in whichparticularly simple and effective indicator switch arrangements areincorporated Before the transaction grand total is allo- I countries andtherefore a function of th e men tioned gear assembly is to provide a-levy"- gear change ratio so that the rate of grand total line shaftrotation is such as to deduct levy percentage.

the particular The gear assemblies used heretofore are open to objectionin several respects. For example; in

order to fix a given ratio of rotation between the grand total counterspindle and the line shaft,

with the single gear change devices, and which in a general manner givesa simpler and more efllcient. gear assembly in comparison with thosedevised heretofore.

A gear assembly according hereto mainly comprises, a main gear pinion,means for driving this pinion in correspondence with a transaction countaccumulating in a grand total adding unit forming part of 'the'totaliser installation, a driven levy gear abletomesh the main pinion,a driving K levy gear fixed co-axially to the driven levy gear tions orselections namely, that relative to the Y levy gear ratio occasionspractically no inconvenience because once the levy gear unit giving therequired levy ratio is'selected, it will remain constant for any givenstate or country and in any given location for relatively long periods.However, the remaining two manipulations or selections are likely tochange from event to event, and as they take considerable time to becarried out, it is a matter of considerable difficulty to arrange whenvery little time is available, as be The prior indicator switcharrangeare a source of trouble unless much atten'tion'is devoted theretoby way of servicing, inspection and repair. Again, the arrangement-as awhole, is heavy and cumbersome by reason of the large number of gearwheels and the like incorporated therein and is thus not readilyremovable from the installation for placement in a different in--stallation, or ready replacement by a reserve gear assembly in the eventof failure or breakdown. This last mentioned defect is agg'ravatedby thehitherto usual incorporation of the grand totaladding unit at one withthe gear assembly, as this makes it unavoidable for the gear assembly tobe useless except in association with that particular adding unit.Therefore the gear assembly itself is incapable of being standardised tosuit any adding unit irrespectively of whether the'adding unit containsonly one escapementshaft-(as is common in smaller installations) or-twoor 1 more escapement shafts as in larger installationsf The object ofthis invention is to overcome the mentioned disadvantages in arelatively simple.

therewith to constitute a levy gear unit, four driven" gears fixedtogether in coned arrangement, means whereby the driving levy gear maybe selectively meshed with any one of the coned gears, and held inselected enmeshment relative thereto, and mechanism for drive connectingthe coned gears to a grand total odds-computing line shaft.

'An example of the invention is illustrated in the drawings herewith.

Figure 1 is a side elevation of a gear assembly.

Figure-2 is a plan projected from Figure l.

Figure 3 is a side elevationtaken fromthe' reverse side relative toFigure 1'; I

Figure 4 is a sectional end elevation taken substantially along line 4-4in Figure l.

Figure 5 is a side elevation of a gauge block as it would appear inFigure 1 if unob'scured.

Figure dis a sectional plan taken substantially along line 6-6 in Figure5.

The several shafts, gears and other parts of the assembly aremounted'upon a frame 1 adapted for simple removable mounting (by boltingthrough brackets 8,ffo'r"example) upon, a bed plate or the like(not'fshown) which may'also constitute a bed for a separate grand totaladding unit.

The main gear pinion 9' is driven in correspondence with a transactioncount, as it ac cumulates in the grand total adding unit, by mechanismwhich is largely of conventional design. This mechanism includes asprocket IO which is rotated by a chain (not shown) meshed with asimilar'sprocket on the grand total counter spindle.

The sprocket I0 is fixed to one crown wheel ll of an epicyclic gearunit. This unit is of thecommon type consisting of two crown wheels Hand I2 mounted on a. pin l3, and a pair of planetary pinions I4 mountedon "a centre cross [5.

The crown wheel ll', crown wheel l2, and the centre cross l5 are freelymounted on pin [3. The centre cross has a striker arm l6 fixed thereto.When crownwheel II is turned "forwardly," the arm 16 is alsoturnedforwardly (anti-clockwise-in Figure 3) by reason of the crownwheel 12, at this stage, remaining stationary due to the loading effectof the gear train (referred to later herein) drive connected thereto.The forward movement of arm l6 causes a peg I I! thereon to engagebetween the limbs of a stirrup l8 fixed on the pin [9 of a spring loaded(20) toggle lever 2|. This lever has a nose 22 able to close a pair ofcontacts 23 (shown already closed.

manner, by the provisions of a gear 'assembly which is usable with, orseparable from, Various types of adding units; in which the priornecessity in Figure '1) tO energisea magnetic clutch 24; The drivingmember'25 of this clutch is rotated ,1 "continuously. Energisation ofthe clutch rotates 51 crown wheel l 2 reversely (incomparison with theprior rotation of crown wheel 'll')" d'ueto the direction ofrotationc'ontinuously applied to driving member 25 by way (for example)of a belt driven by an electric motor (not shown) This reverse rotationis effected through suitable gears'ZE, '21, 23 and-29 so that when thesprocket l halts (or slows down) the arm 'fli'will return to re-operatethe stirrup l3, and thus the contacts-23 will be re-opened. The magneticclutch is thus de-energized so that rotation of the'cr'o'wn wheel l2ceases (due to therelatively heavy inertia loading thereon as'previouslyreferred to) when-it has turned through the sam or substantially thesame angle (but in reverse direction) as the original rotation-ofthe'crown wheel H. Crown wheel l2 has a gear wheel 30 fixedconcentrically thereto and'c'o'n'sequently this gear wheel (althoughturned'reversely to the sprocket It) has the amount of its rotationdirectlyiproportional to the amount 'by' which the grand total counterspindle is rotated. In this regard it will be clear that eachre'versepart-rotation of wheel 12 may not be exactly'angularly equal to theopposite part-rotation of wheel H which preceded it, but as theseangular discrepancies are not cumulative and are in fact compensatedduring the next part-rotation of wheels H and I2, the final result(following a transaction run of any appreciable duration) is that theamount by which gear 30 is rotated is (in practice) directlyproportional to the amount by which the sprocket Ii] (turned by thegrand total counter spindle) is rotated.

Gear 30 (through suitable gears 3|, 32 and 33) turns a shaft 34 whichcarries the main gear pinion 9. This pinion meshes the larger gear oftwo gears 35 and 36 which are fixed together. These two gears constitutea levy gear unit. This unit provides (as previously indicated) for thegear change ratio whereby the governmental tax and operating costproportion of the grand total of transactions is deducted. For example,assuming the total levy amounts to ten percent, then the larger gear 35may have one hundred teeth and the smaller gear 36 would, in that case,have ninety teeth. If the levy were fifteen percent the larger gearcould have one hundred teeth and the smaller eighty-five teeth.

The gears 35 and 35 are coaxialy fixed on a boss 31, freely rotatable ona bearing sleeve 38 fixed in the outer end of a swing bracket 39. Thisbracket is axially slidable and rotatably movable about a bearing sleeve43 within which shaft 34 is rotatable. The sleeve 40 is fixed to theframe 1 by way of a fiange 4| and screws 42. The smaller gear 33 may bemeshed with any one of four gear wheels 43, 44, 45 and 46 concentricallyfixed together in coned formation, and keyed upon a final drive shaft 47which is drive connected, by gears 48 and 49, to a sprocket 50 or likewheel for direct operation of the grand total odds-computing line shaft,shaft 4! preferably incorporates a clutch and a crank handle 52, theclutch being disengageable in known manner (by operation of knob 53) toenable the crank handle to be operated for turning the line shaft toreset the grand total sliders of the computing units into their datumpoint or zero positions.

The four coned gear wheels with which the smaller gear 36 of the levygear unit may be selectively enmeshed are of such size as to provide forthe four changes which in the prior assemblies 6 eoiild only' be made bytwo gear change manipw lations. meshed with gear 36) gives a line shaftrotation suitable for a two-dividend event at=double speed, gear-45 athree-dividend Zeven't atdouble speed,

gear 44 a two-dividend event at normal speed,

and gear 43a three-dividend event at :normal speed.- For this quadruplegear changeit is necessary (as previouslyindicated) fortlre swingbracket 39 to be not only :anguiariy movable 'but also movable inan axial or lo'ngitudinal direction. The four required positions for theswing bracket, are arranged forby-the provis'ion on said swingbracket-of a locatorpin 54 which slidable in :sleeve 38 and may'bescrewed (55) within four-1 holes or-cavities 56 respectively providedin fourstepfaces- 5 1, 58, 59and 60 on a ga-uge block 5l fix'e'd on'th'e'gear asseinbly frame. These step faces have-different-l'evels (seeFigure 6) equivalent to the axial spacing-of the four cone'd'gea'rwheels, and the holes or cavities in said'step faces arecircumferentially spaced apart (see Figure 5) -by'the distancesnecessary to give correct meshing placementof the gear-36 with anyoneo'f the coned gears, thus defining the correct positions resultingfrom angular and axial adjustment of the swing bracket 39.

The indicator switch arrangements which are preferably incorporated,comprise four springloaded press buttons or rods 62, 63, 64 and 65slidable in an axial direction, within counterbores, aligned with thecavities 56 in the gauge block. The press buttons or rods protrudethrough holes in a support plate 66 which is fixed relative to the gaugeblock, and carries four pairs of self opening contacts 67 mounted onspring limbs 68. These limbs 68 act as loading springs for the pressbuttons, so that when the pin 54 is fully entered into any one of thecavities 56 (as shown in Figure 4) it depresses the related pressbutton, against its spring loading, so that it projects from the rearface of the plate 66 and thus closes one pair of contacts 61, which intime close the circuit for the related indicating device in the controlroom, thus notifying the correct capacity and dividend ratios for thetime being obtaining.

What is claimed is:

1. A gear change mechanism for use with race totalisator odds computingdevices comprising, a main gear pinion, a plurality of output gearswhich are fixed together in coned arrangement, a levy gear unitincluding a driven gear meshed with said main pinion and a driving gearfixed co-axially to said driven gear for selective engagement with saidoutput gears, a swing bracket provided with a projecting boss and ashoulder portion extending laterally with respect to said boss saidswing bracket being axially and angularly movable relative to said maingear pinion and having said levy gear unit freely revolubly mountedthereon, a gauge block having a plurality of stepped face portionscorresponding to the number of said output gears against which theshoulder portion of the swing bracket may abut to determine axialalignment of the levy gear unit With said output gears, said gauge blockbeing provided with a plurality of spaced cavities corresponding to thenumber of output gears within which said boss may be received todetermine angular alignment of the levy gear unit with said outputgears.

2. A gear assembly according to claim 1 in which the cavities providedin the gauge block include an internally threaded portion and the swingbracket is provided with a locator pincon- For example, the .gear 46-w'hen err-'- centrically disposed with respect to the boss. one end ofthe locator pin being threaded for engagement with the threaded portionof the cavities so that the levy gear unit may be locked in axial andangular alignment with the output ears.

3. A gear change mechanism for use with race totalisator odds computingdevices comprising a main gear pinion, a plurality of output gears whichare fixed together in coned arrangement, a levy gear unit having adriven gear meshed with said main pinion and a driving gear fixedcoaxially to said driven gear for selective engagement with said outputgears, a swing bracket which is axially and angularly movable relativeto said main pinion and whereon said levy gear unit is freely revolublymounted, a gauge block having a plurality of cavities provided thereincorresponding to the number of output gears, a locator pin on said swingbracket which is engageable within any one of the cavities formed insaid gauge block, said gauge block being provided with counterboresaligned with said cavities, a press button for controlling an electricindicating circuit slidably positioned within each of said counterboresso as to be moved by said locating pin when in engagement with a cavityto indicate the position of the levy gear unit.

AWDRY FRANCIS JULIUS.

EVA DRONGHSIA ODIERNA JULIUS. AWDRY FRANCIS JULIUS. RUSSELL STUARTHICKS. Executors of the Estate of George Alfred Julius,

Deceased.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

